1. Diameter: 27.2/30.8/31.6mm; Length: 350/400mm; Suitable for road and mountain bikes; Carbon Fiber Seatpost appearance:3K Matte/Glossy.
2. Carbon Fiber: Constructed of ultra light and strong 3K Carbon Fiber. Light weight, never rust; Easy to install. Frosting finish, exquisite workmanship, nice touch feeling.
3. About Choose the Size:1.Choose Same size diameter With the original seatpost. 2.Choose the size according to the inside diameter of the frame tube.
4. Carbon Fiber Compares to Aluminum Alloy: Lighter in weight. Much more beautiful in appearance. Brighter in Color. Stronger in pressure resistance. Anti-Shock. Has proper elasticity, improving your bicycle's class in minutes.
5. Install the 400mm Seatpost Carbon Seatposts 27.2 correctly, please follow the specified tightening torque (4Nm). Since it is made of carbon, we recommend tightening the body to support it by tightening with your hands. Cracks can occur when strong tensions occur.